New ternary phosphides Ln25Ni49P33 (Ln = Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er)

被引：0
|
作者：
Chykhrij, SI [1 ]
Babizhetsky, VS [1 ]
Kuz'ma, YB [1 ]
机构：
[1] Ivan Franko Natl Univ Lviv, Dept Analyt Chem, UA-79005 Lviv, Ukraine
来源：
ZEITSCHRIFT FUR ANORGANISCHE UND ALLGEMEINE CHEMIE | 2001年 / 627卷 / 06期
关键词：
rare earth phosphides; crystal structure;
D O I：
10.1002/1521-3749(200106)627:6<1319::AID-ZAAC1319>3.0.CO;2-U
中图分类号：
O61 [无机化学];
学科分类号：
070301 ; 081704 ;
摘要：
New ternary phosphides Ln(25)Ni(49)P(33) (Ln = Ce, Pr, Nd, Sm, Gd, Tb, Dy, Ho, Er) have been synthesized by are melting of pure components. Crystal structure has been determined for Sm25Ni49P33 using X-ray powder diffraction data and the Rietvelt method: P (6) over bar m2, a = 22.096(4), c = 3.8734(9) Angstrom, R = 0.096. Crystal structure of Sm25Ni49P33 is of a new type and belongs to large family of ternary compounds with trigonal-prismatic coordination of the smallest size atoms and metal to nonmetal ratio equal or close to 2:1. It is a member of homologous subseries of the compounds with unit cell contents described by general chemical formula (RnM(n+2)X(n+1)-32)-M-2-X-2. Lattice parameters of the isotypic compounds Ln(25)Ni(49)P(33) have been refined using X-ray powder diffraction data.
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页码：1319 / 1324
页数：6
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